second: have placeholder dot bounce
This commit is contained in:
Vince Weaver
parent
5126506b04
commit
6e8bfa4181
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@ -149,6 +149,7 @@ qload.inc: generate_common QLOAD
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./generate_common -a 0x1200 -s clear_bottom qload.lst >> qload.inc
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./generate_common -a 0x1200 -s clear_bottoms qload.lst >> qload.inc
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./generate_common -a 0x1200 -s clear_screens qload.lst >> qload.inc
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./generate_common -a 0x1200 -s clear_top qload.lst >> qload.inc
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# ./generate_common -a 0x1200 -s mockingboard_patch qload.lst >> qload.inc
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# ./generate_common -a 0x1200 -s mockingboard_init qload.lst >> qload.inc
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@ -0,0 +1,47 @@
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;================================
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; plot routine
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;================================
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; Xcoord in XPOS
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; Ycoord in YPOS
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; color in COLOR
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plot:
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lda YPOS ; 3
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lsr ; shift bottom bit into carry ; 2
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bcc plot_even ; 2nt/3
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plot_odd:
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ldx #$f0 ; 2
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bcs plot_c_done ; 2nt/3
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plot_even:
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ldx #$0f ; 2
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plot_c_done:
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stx MASK ; 3
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asl ; shift back (now even) ; 2
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tay ; 2
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lda gr_offsets,Y ; lookup low-res memory address ; 4
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clc ; 2
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adc XPOS ; 3
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sta GBASL ; 3
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lda gr_offsets+1,Y ; 4
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adc DRAW_PAGE ; add in draw page offset ; 3
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sta GBASH ; 3
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ldy #0 ; 2
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plot_write:
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lda MASK ; 3
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eor #$ff ; 2
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and (GBASL),Y ; 5+
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sta COLOR_MASK ; 3
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lda COLOR ; 3
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and MASK ; 3
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ora COLOR_MASK ; 3
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sta (GBASL),Y ; 6
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rts ; 6
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@ -2,6 +2,13 @@
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; this one is a tough one
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; TODO:
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; 16 of them? Start by falling in, bouncing when hit bottom
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; wide, sine wave it up
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; narrow, sine wave it up
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; at end, just stop deleting them? draw random
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;
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; by deater (Vince Weaver) <vince@deater.net>
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@ -17,18 +24,29 @@ spheres_start:
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;===================
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; Load graphics
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;===================
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load_loop:
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jsr clear_screens ; clear both pages of LORES
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bit SET_GR
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bit LORES
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bit FULLGR
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bit PAGE1
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lda #4
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sta DRAW_PAGE
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dots_loop:
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jsr clear_top
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jsr clear_bottom
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ldx #12
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horizon_loop:
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lda gr_offsets_l,X
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sta OUTL
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lda gr_offsets_h,X
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clc
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adc DRAW_PAGE
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sta OUTH
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ldy #39
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@ -42,10 +60,61 @@ horizon_inner:
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cpx #24
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bne horizon_loop
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lda #15
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sta COUNT
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dot_loop:
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; Xcoord in XPOS
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; Ycoord in YPOS
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; color in COLOR
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jsr wait_until_keypress
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ldx COUNT
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lda wide_points_x,X
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sta XPOS
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lda wide_points_y,X
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sta YPOS
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lda #$66 ; light blue
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sta COLOR
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jsr plot
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dec COUNT
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bpl dot_loop
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jsr page_flip
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; move dots
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ldx #15
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move_dot_loop:
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lda wide_points_y,X
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clc
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adc dot_direction,X
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sta wide_points_y,X
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cmp #40
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bcs dot_reverse ; bge
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cmp #1
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bcc dot_reverse ; blt
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bcs dot_good
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dot_reverse:
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lda dot_direction,X
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eor #$FF
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sta dot_direction,X
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inc dot_direction,X
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dot_good:
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dex
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bpl move_dot_loop
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lda KEYPRESS
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bmi dots_done
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jmp dots_loop
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dots_done:
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bit KEYRESET
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rts
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@ -55,6 +124,7 @@ dots_done:
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.include "../gr_copy.s"
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.include "../gr_offsets_split.s"
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.include "../gr_offsets.s"
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.include "../gr_plot.s"
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.include "../wait_keypress.s"
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@ -64,4 +134,16 @@ dots_done:
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; .include "../hgr_copy_fast.s"
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wide_points_x:
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.byte 8,11,17,25,30,28,20,13
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.byte 9,14,21,28,30,24,17,11
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wide_points_y:
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; .byte 19,16,12,11,14,18,20,21
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; .byte 18,13,11,12,16,19,20,20
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.byte 9, 6 ,2,1,4,8,10,11
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.byte 15,12, 8,7,10,14,16,17
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dot_direction:
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.byte 1, 1, 1, 1, 1, 1, 1, 1
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.byte 1, 1, 1, 1, 1, 1, 1, 1
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@ -174,7 +174,6 @@ start_address:
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.byte $D0,$60,$60,$60 ; MUSIC, INTRO, TUNNEL, OCEAN
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.byte $80,$80,$80 ; POLAR, SPHERES, DOTS
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aux_dest: ;
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.byte $D0,$FF,$60,$60 ; MUSIC, INTRO, TUNNEL, OCEAN
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.byte $10,$20,$30 ; POLAR, SPHERES, DOTS
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@ -182,12 +182,13 @@ RR = $FA
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BACKUP_OUTL = $F2
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BACKUP_OUTH = $F3
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; Nuts/ operner
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; Nuts/ opener
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SPRITE_Y = $F2
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SPRITE_X = $F3
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CURRENT_ROW = $F4
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COLOR_MASK = $F2
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